先に駆け出すなんてずるいぞ。の英語

That's cheating to start running before everyone else.

You beat me to it.

Go on ahead. I'll soon catch up (with you).

without preamble

I will go on ahead.

Go first.

Move forward one step.

the condition of having one's turn first

I'll go first；I'll go ahead

I can go forward.

I'm taking one step at a time.

I'm advancing one step at a time.

way out front in the race

to go ahead

being able to thrust or push forward

thrust a chair forward

I can go forward.

Advance two steps.

make an early start

I will go before you.

step forward two paces [take two steps forward]

to fall forward

travel in front of

to fail to move forward as intended

Go on ahead. I'll catch you up later.

to be able to outdistance a person or thing previously in front

Move along, please.

to proceed too much

take [make] a step forward [back, backward]

Go on before me